2020531109 has 2 divisors, whose sum is σ = 2020531110. Its totient is φ = 2020531108.

The previous prime is 2020531087. The next prime is 2020531129. The reversal of 2020531109 is 9011350202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937320225 + 83210884 = 44015^2 + 9122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020531109 is a prime.

It is a super-3 number, since 3×2020531109³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2020531129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010265554 + 1010265555.

It is an arithmetic number, because the mean of its divisors is an integer number (1010265555).

Almost surely, 2^2020531109 is an apocalyptic number.

It is an amenable number.

2020531109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020531109 is an equidigital number, since it uses as much as digits as its factorization.

2020531109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 2020531109 is about 44950.3182302417. The cubic root of 2020531109 is about 1264.2176436918.

The spelling of 2020531109 in words is "two billion, twenty million, five hundred thirty-one thousand, one hundred nine".